7x57 QL Request
- Thread starter Palouser
- Start date
DrMike
Ballistician
- Nov 8, 2006
- 37,402
- 6,213
Cartridge : 7 x 57 mm Mauser
Bullet : .284, 140, Nosler BalTip 28140
Useable Case Capaci: 44.673 grain H2O = 2.901 cm³
Cartridge O.A.L. L6: 3.000 inch = 76.20 mm
Barrel Length : 22.0 inch = 558.8 mm
Powder : Alliant Reloder-17
Predicted data by increasing and decreasing the given charge,
incremented in steps of 2.0% of nominal charge.
CAUTION: Figures exceed maximum and minimum recommended loads !
Step Fill. Charge Vel. Energy Pmax Pmuz Prop.Burnt B_Time
% % Grains fps ft.lbs psi psi % ms
-20.0 83 35.92 2234 1551 28243 7815 89.1 1.450
-18.0 85 36.82 2293 1635 30172 8090 90.6 1.411
-16.0 87 37.72 2353 1721 32242 8354 92.0 1.374
-14.0 89 38.61 2413 1810 34463 8608 93.3 1.337
-12.0 91 39.51 2473 1902 36848 8847 94.5 1.301
-10.0 94 40.41 2534 1996 39414 9073 95.6 1.259
-08.0 96 41.31 2595 2093 42175 9282 96.6 1.220
-06.0 98 42.21 2656 2192 45150 9474 97.5 1.181
-04.0 100 43.10 2716 2294 48362 9648 98.2 1.144 ! Near Maximum !
-02.0 102 44.00 2777 2398 51829 9801 98.8 1.109 ! Near Maximum !
+00.0 104 44.90 2838 2503 55581 9933 99.3 1.074 ! Near Maximum !
+02.0 106 45.80 2898 2611 59650 10043 99.7 1.041 !DANGEROUS LOAD-DO NOT USE!
+04.0 108 46.70 2958 2720 64066 10130 99.9 1.009 !DANGEROUS LOAD-DO NOT USE!
+06.0 110 47.59 3018 2831 68871 10192 100.0 0.978 !DANGEROUS LOAD-DO NOT USE!
+08.0 112 48.49 3078 2944 74109 10234 100.0 0.947 !DANGEROUS LOAD-DO NOT USE!
+10.0 114 49.39 3137 3058 79831 10272 100.0 0.918 !DANGEROUS LOAD-DO NOT USE!
Results caused by ± 10% powder lot-to-lot burning rate variation using nominal charge
Data for burning rate increased by 10% relative to nominal value:
+Ba 104 44.90 2978 2757 67590 9516 100.0 0.991 !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba 104 44.90 2637 2161 45156 9714 93.2 1.183
Cartridge : 7 x 57 mm Mauser
Bullet : .284, 140, Nosler BalTip 28140
Useable Case Capaci: 44.673 grain H2O = 2.901 cm³
Cartridge O.A.L. L6: 3.000 inch = 76.20 mm
Barrel Length : 22.0 inch = 558.8 mm
Predicted Data for Indicated Charges of the Following Powders.
Matching Maximum Pressure: 55500 psi, or 382 MPa
or a maximum loading ratio or filling of 110 %
These calculations refer to your specified settings in QuickLOAD 'Cartridge Dimensions' window.
C A U T I O N : any load listed can result in a powder charge that falls below minimum suggested
loads or exceeds maximum suggested loads as presented in current handloading manuals. Understand
that all of the listed powders can be unsuitable for the given combination of cartridge, bullet
and gun. Actual load order can vary, depending upon lot-to-lot powder and component variations.
USE ONLY FOR COMPARISON !
2 loads produced a Loading Ratio below user-defined minimum of 90%. These powders have been skipped.
Powder type Filling/Loading Ratio Charge Charge Vel. Prop.Burnt P max P muzz B_Time
% Grains Gramm fps % psi psi ms
--------------------------------- -----------------------------------------------------------------
Alliant Reloder-17 103.9 44.9 2.91 2836 99.3 55500 9931 1.075 ! Near Maximum !
Accurate 4350 108.4 44.6 2.89 2787 97.8 55500 9585 1.101 ! Near Maximum !
Norma URP 108.6 44.2 2.87 2785 97.7 55500 9553 1.089 ! Near Maximum !
Ramshot Hunter 108.8 46.3 3.00 2784 95.8 55500 9745 1.085 ! Near Maximum !
Vihtavuori N550 105.3 44.3 2.87 2782 97.6 55500 9643 1.096 ! Near Maximum !
Winchester 760 102.9 44.8 2.90 2779 94.9 55500 9674 1.088 ! Near Maximum !
Hodgdon H414 102.9 44.8 2.90 2779 94.9 55500 9674 1.088 ! Near Maximum !
Norma 203 old 100.5 41.8 2.71 2747 99.5 55500 9028 1.113 ! Near Maximum !
Norma 204 107.0 45.5 2.95 2732 92.0 55500 9358 1.088 ! Near Maximum !
Accurate 4064 100.4 40.4 2.62 2728 100.0 55500 8502 1.135 ! Near Maximum !
Hodgdon H380 99.4 41.8 2.71 2728 97.3 55500 9093 1.109 ! Near Maximum !
Accurate 2520 93.0 40.4 2.62 2725 100.0 55500 8499 1.117 ! Near Maximum !
Hodgdon Hybrid 100V 110.0 43.8 2.84 2719 98.8 52955 8874 1.109 ! Near Maximum !
Accurate 2495 94.5 38.1 2.47 2711 100.0 55500 8142 1.142 ! Near Maximum !
IMR 4007 SSC 100.6 42.0 2.72 2682 94.0 55500 8820 1.111 ! Near Maximum !
Alliant Reloder-19 110.0 45.3 2.94 2672 90.7 50377 9363 1.134 ! Near Maximum !
Winchester Supreme 780 110.0 47.8 3.09 2671 91.1 53607 8991 1.107 ! Near Maximum !
IMR 4831 110.0 43.4 2.81 2663 96.6 48656 9098 1.162 ! Near Maximum !
Hodgdon H4831 SC 110.0 45.8 2.97 2600 86.6 49332 8821 1.149 ! Near Maximum !
Bullet : .284, 140, Nosler BalTip 28140
Useable Case Capaci: 44.673 grain H2O = 2.901 cm³
Cartridge O.A.L. L6: 3.000 inch = 76.20 mm
Barrel Length : 22.0 inch = 558.8 mm
Powder : Alliant Reloder-17
Predicted data by increasing and decreasing the given charge,
incremented in steps of 2.0% of nominal charge.
CAUTION: Figures exceed maximum and minimum recommended loads !
Step Fill. Charge Vel. Energy Pmax Pmuz Prop.Burnt B_Time
% % Grains fps ft.lbs psi psi % ms
-20.0 83 35.92 2234 1551 28243 7815 89.1 1.450
-18.0 85 36.82 2293 1635 30172 8090 90.6 1.411
-16.0 87 37.72 2353 1721 32242 8354 92.0 1.374
-14.0 89 38.61 2413 1810 34463 8608 93.3 1.337
-12.0 91 39.51 2473 1902 36848 8847 94.5 1.301
-10.0 94 40.41 2534 1996 39414 9073 95.6 1.259
-08.0 96 41.31 2595 2093 42175 9282 96.6 1.220
-06.0 98 42.21 2656 2192 45150 9474 97.5 1.181
-04.0 100 43.10 2716 2294 48362 9648 98.2 1.144 ! Near Maximum !
-02.0 102 44.00 2777 2398 51829 9801 98.8 1.109 ! Near Maximum !
+00.0 104 44.90 2838 2503 55581 9933 99.3 1.074 ! Near Maximum !
+02.0 106 45.80 2898 2611 59650 10043 99.7 1.041 !DANGEROUS LOAD-DO NOT USE!
+04.0 108 46.70 2958 2720 64066 10130 99.9 1.009 !DANGEROUS LOAD-DO NOT USE!
+06.0 110 47.59 3018 2831 68871 10192 100.0 0.978 !DANGEROUS LOAD-DO NOT USE!
+08.0 112 48.49 3078 2944 74109 10234 100.0 0.947 !DANGEROUS LOAD-DO NOT USE!
+10.0 114 49.39 3137 3058 79831 10272 100.0 0.918 !DANGEROUS LOAD-DO NOT USE!
Results caused by ± 10% powder lot-to-lot burning rate variation using nominal charge
Data for burning rate increased by 10% relative to nominal value:
+Ba 104 44.90 2978 2757 67590 9516 100.0 0.991 !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba 104 44.90 2637 2161 45156 9714 93.2 1.183
Cartridge : 7 x 57 mm Mauser
Bullet : .284, 140, Nosler BalTip 28140
Useable Case Capaci: 44.673 grain H2O = 2.901 cm³
Cartridge O.A.L. L6: 3.000 inch = 76.20 mm
Barrel Length : 22.0 inch = 558.8 mm
Predicted Data for Indicated Charges of the Following Powders.
Matching Maximum Pressure: 55500 psi, or 382 MPa
or a maximum loading ratio or filling of 110 %
These calculations refer to your specified settings in QuickLOAD 'Cartridge Dimensions' window.
C A U T I O N : any load listed can result in a powder charge that falls below minimum suggested
loads or exceeds maximum suggested loads as presented in current handloading manuals. Understand
that all of the listed powders can be unsuitable for the given combination of cartridge, bullet
and gun. Actual load order can vary, depending upon lot-to-lot powder and component variations.
USE ONLY FOR COMPARISON !
2 loads produced a Loading Ratio below user-defined minimum of 90%. These powders have been skipped.
Powder type Filling/Loading Ratio Charge Charge Vel. Prop.Burnt P max P muzz B_Time
% Grains Gramm fps % psi psi ms
--------------------------------- -----------------------------------------------------------------
Alliant Reloder-17 103.9 44.9 2.91 2836 99.3 55500 9931 1.075 ! Near Maximum !
Accurate 4350 108.4 44.6 2.89 2787 97.8 55500 9585 1.101 ! Near Maximum !
Norma URP 108.6 44.2 2.87 2785 97.7 55500 9553 1.089 ! Near Maximum !
Ramshot Hunter 108.8 46.3 3.00 2784 95.8 55500 9745 1.085 ! Near Maximum !
Vihtavuori N550 105.3 44.3 2.87 2782 97.6 55500 9643 1.096 ! Near Maximum !
Winchester 760 102.9 44.8 2.90 2779 94.9 55500 9674 1.088 ! Near Maximum !
Hodgdon H414 102.9 44.8 2.90 2779 94.9 55500 9674 1.088 ! Near Maximum !
Norma 203 old 100.5 41.8 2.71 2747 99.5 55500 9028 1.113 ! Near Maximum !
Norma 204 107.0 45.5 2.95 2732 92.0 55500 9358 1.088 ! Near Maximum !
Accurate 4064 100.4 40.4 2.62 2728 100.0 55500 8502 1.135 ! Near Maximum !
Hodgdon H380 99.4 41.8 2.71 2728 97.3 55500 9093 1.109 ! Near Maximum !
Accurate 2520 93.0 40.4 2.62 2725 100.0 55500 8499 1.117 ! Near Maximum !
Hodgdon Hybrid 100V 110.0 43.8 2.84 2719 98.8 52955 8874 1.109 ! Near Maximum !
Accurate 2495 94.5 38.1 2.47 2711 100.0 55500 8142 1.142 ! Near Maximum !
IMR 4007 SSC 100.6 42.0 2.72 2682 94.0 55500 8820 1.111 ! Near Maximum !
Alliant Reloder-19 110.0 45.3 2.94 2672 90.7 50377 9363 1.134 ! Near Maximum !
Winchester Supreme 780 110.0 47.8 3.09 2671 91.1 53607 8991 1.107 ! Near Maximum !
IMR 4831 110.0 43.4 2.81 2663 96.6 48656 9098 1.162 ! Near Maximum !
Hodgdon H4831 SC 110.0 45.8 2.97 2600 86.6 49332 8821 1.149 ! Near Maximum !
- Thread starter
- #3
- Thread starter
- #4
DrMike
Ballistician
- Nov 8, 2006
- 37,402
- 6,213
Mea Culpa. I was asleep at the switch. 
Likely, I'm trying to do too many things at once. I have excellent accuracy with RL17 and with H414 (W760). With lighter bullets, I've had good success with IMR4320. I have used H4350 with the 140 grain Sierra Game King. Below maximum charge, it showed good accuracy for me. As I neared max charge, the accuracy fell off. H4350 will work, however. I can't tell you why it didn't show up on that particular list.
Cartridge : 7 x 57 mm Mauser
Bullet : .284, 140, Nosler BalTip 28140
Useable Case Capaci: 44.673 grain H2O = 2.901 cm³
Cartridge O.A.L. L6: 3.000 inch = 76.20 mm
Barrel Length : 22.0 inch = 558.8 mm
Powder : Hodgdon H4350
Predicted data by increasing and decreasing the given charge,
incremented in steps of 2.0% of nominal charge.
CAUTION: Figures exceed maximum and minimum recommended loads !
Step Fill. Charge Vel. Energy Pmax Pmuz Prop.Burnt B_Time
% % Grains fps ft.lbs psi psi % ms
-20.0 88 35.44 2153 1441 28933 6788 82.1 1.456
-18.0 90 36.33 2207 1515 30874 7032 83.5 1.419
-16.0 92 37.21 2262 1591 32938 7272 84.8 1.383
-14.0 95 38.10 2317 1669 35147 7508 86.1 1.347
-12.0 97 38.98 2373 1750 37513 7740 87.4 1.309
-10.0 99 39.87 2429 1834 40047 7967 88.6 1.270
-08.0 101 40.76 2485 1919 42765 8187 89.8 1.232
-06.0 103 41.64 2541 2007 45683 8401 90.9 1.196
-04.0 106 42.53 2598 2098 48818 8607 92.0 1.160 ! Near Maximum !
-02.0 108 43.41 2655 2191 52192 8804 93.0 1.126 ! Near Maximum !
+00.0 110 44.30 2712 2286 55827 8992 93.9 1.093 ! Near Maximum !
+02.0 112 45.19 2769 2384 59748 9170 94.8 1.060 !DANGEROUS LOAD-DO NOT USE!
+04.0 114 46.07 2827 2484 63987 9337 95.6 1.029 !DANGEROUS LOAD-DO NOT USE!
+06.0 117 46.96 2884 2586 68575 9492 96.4 0.999 !DANGEROUS LOAD-DO NOT USE!
+08.0 119 47.84 2942 2691 73548 9633 97.1 0.970 !DANGEROUS LOAD-DO NOT USE!
+10.0 121 48.73 3000 2798 78953 9761 97.7 0.942 !DANGEROUS LOAD-DO NOT USE!
Results caused by ± 10% powder lot-to-lot burning rate variation using nominal charge
Data for burning rate increased by 10% relative to nominal value:
+Ba 110 44.30 2855 2534 66650 9143 98.6 1.014 !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba 110 44.30 2533 1994 45930 8451 86.0 1.192
Likely, I'm trying to do too many things at once. I have excellent accuracy with RL17 and with H414 (W760). With lighter bullets, I've had good success with IMR4320. I have used H4350 with the 140 grain Sierra Game King. Below maximum charge, it showed good accuracy for me. As I neared max charge, the accuracy fell off. H4350 will work, however. I can't tell you why it didn't show up on that particular list.Cartridge : 7 x 57 mm Mauser
Bullet : .284, 140, Nosler BalTip 28140
Useable Case Capaci: 44.673 grain H2O = 2.901 cm³
Cartridge O.A.L. L6: 3.000 inch = 76.20 mm
Barrel Length : 22.0 inch = 558.8 mm
Powder : Hodgdon H4350
Predicted data by increasing and decreasing the given charge,
incremented in steps of 2.0% of nominal charge.
CAUTION: Figures exceed maximum and minimum recommended loads !
Step Fill. Charge Vel. Energy Pmax Pmuz Prop.Burnt B_Time
% % Grains fps ft.lbs psi psi % ms
-20.0 88 35.44 2153 1441 28933 6788 82.1 1.456
-18.0 90 36.33 2207 1515 30874 7032 83.5 1.419
-16.0 92 37.21 2262 1591 32938 7272 84.8 1.383
-14.0 95 38.10 2317 1669 35147 7508 86.1 1.347
-12.0 97 38.98 2373 1750 37513 7740 87.4 1.309
-10.0 99 39.87 2429 1834 40047 7967 88.6 1.270
-08.0 101 40.76 2485 1919 42765 8187 89.8 1.232
-06.0 103 41.64 2541 2007 45683 8401 90.9 1.196
-04.0 106 42.53 2598 2098 48818 8607 92.0 1.160 ! Near Maximum !
-02.0 108 43.41 2655 2191 52192 8804 93.0 1.126 ! Near Maximum !
+00.0 110 44.30 2712 2286 55827 8992 93.9 1.093 ! Near Maximum !
+02.0 112 45.19 2769 2384 59748 9170 94.8 1.060 !DANGEROUS LOAD-DO NOT USE!
+04.0 114 46.07 2827 2484 63987 9337 95.6 1.029 !DANGEROUS LOAD-DO NOT USE!
+06.0 117 46.96 2884 2586 68575 9492 96.4 0.999 !DANGEROUS LOAD-DO NOT USE!
+08.0 119 47.84 2942 2691 73548 9633 97.1 0.970 !DANGEROUS LOAD-DO NOT USE!
+10.0 121 48.73 3000 2798 78953 9761 97.7 0.942 !DANGEROUS LOAD-DO NOT USE!
Results caused by ± 10% powder lot-to-lot burning rate variation using nominal charge
Data for burning rate increased by 10% relative to nominal value:
+Ba 110 44.30 2855 2534 66650 9143 98.6 1.014 !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba 110 44.30 2533 1994 45930 8451 86.0 1.192
- Thread starter
- #6
- Thread starter
- #7
I just bought a box of Nosler Trophy Grade Ammo, which I assume is loaded with H414, pulled the Accubonds, saved the powder and loaded with H4350 and 140 Grain BTs. 45 grains is what I started at and had it sighted at three and the fourth shot was 1/2" off of three. Only loaded 4 shells, now I loaded more and am going to go shoot more when it quits raining!
Thanks for the info!
Thanks for the info!
Attachments
nvbroncrider
Handloader
- Aug 20, 2011
- 3,085
- 4
Is that outta a shot show M70 FW?
- Thread starter
- #9
- Thread starter
- #10
Dr. Mike-
I am not too familiar with QL, but I was looking at the last round of data, in quick load, it shows a usable case capacity of 44.673. Noslers book shows usable case capacity for 140 grains at 52.5? I put in 45 and there is free space and you can tell it isn't compressed. How does quick load come up with this case capacity?
Looking at the Hornady book and Hodgon's website, 45 grains of H4350 should be well below max, but quick load shows 45 grains as almost a dangerous load.
Todd
I am not too familiar with QL, but I was looking at the last round of data, in quick load, it shows a usable case capacity of 44.673. Noslers book shows usable case capacity for 140 grains at 52.5? I put in 45 and there is free space and you can tell it isn't compressed. How does quick load come up with this case capacity?
Looking at the Hornady book and Hodgon's website, 45 grains of H4350 should be well below max, but quick load shows 45 grains as almost a dangerous load.
Todd
Ridgerunner665
Handloader
- Oct 28, 2008
- 2,516
- 298
Measure your own case capacity, bullet seating depth, bullet length, case length, etc. and reduce the variable.
How does QuickLoad come up with these measurements? They are simply estimates and averages...to get more accurate data from QuickLoad....put more accurate data in.
How does QuickLoad come up with these measurements? They are simply estimates and averages...to get more accurate data from QuickLoad....put more accurate data in.
- Thread starter
- #12
DrMike
Ballistician
- Nov 8, 2006
- 37,402
- 6,213
Todd,
You gave me 52.5 grains of water, which I assumed you measured as case overfill capacity. Consequently, that is what I used as input on QL. You also gave me a cartridge length of 3.000 inches. Thus, the useable case capacity is calculated to be 44.673 grains of water. The standardized cartridge length is 3.071 inches, and the Maximum Case Capacity, overflow is 59.50 grains of water. If I use these parameters, I get the following data generated:
Cartridge : 7 x 57 mm Mauser
Bullet : .284, 140, Nosler BalTip 28140
Useable Case Capaci: 52.812 grain H2O = 3.429 cm³
Cartridge O.A.L. L6: 3.071 inch = 78.00 mm
Barrel Length : 22.0 inch = 558.8 mm
Powder : Hodgdon H4350
Predicted data by increasing and decreasing the given charge,
incremented in steps of 2.0% of nominal charge.
CAUTION: Figures exceed maximum and minimum recommended loads !
Step Fill. Charge Vel. Energy Pmax Pmuz Prop.Burnt B_Time
% % Grains fps ft.lbs psi psi % ms
-20.0 83 39.60 2240 1560 29459 7821 84.9 1.452
-18.0 85 40.59 2296 1638 31375 8091 86.2 1.416
-16.0 87 41.58 2351 1718 33416 8357 87.5 1.381
-14.0 89 42.57 2407 1801 35589 8618 88.8 1.346
-12.0 91 43.56 2463 1885 37907 8874 89.9 1.312
-10.0 94 44.55 2519 1972 40379 9122 91.1 1.272
-08.0 96 45.54 2575 2061 43015 9363 92.1 1.235
-06.0 98 46.53 2631 2153 45832 9596 93.1 1.199
-04.0 100 47.52 2688 2246 48841 9819 94.1 1.165 ! Near Maximum !
-02.0 102 48.51 2744 2341 52050 10033 95.0 1.132 ! Near Maximum !
+00.0 104 49.50 2801 2439 55456 10235 95.8 1.099 ! Near Maximum !
+02.0 106 50.49 2858 2538 59094 10426 96.5 1.068 !DANGEROUS LOAD-DO NOT USE!
+04.0 108 51.48 2914 2640 62987 10604 97.2 1.038 !DANGEROUS LOAD-DO NOT USE!
+06.0 110 52.47 2971 2744 67160 10768 97.8 1.009 !DANGEROUS LOAD-DO NOT USE!
+08.0 112 53.46 3027 2849 71636 10918 98.4 0.981 !DANGEROUS LOAD-DO NOT USE!
+10.0 114 54.45 3084 2957 76445 11053 98.8 0.954 !DANGEROUS LOAD-DO NOT USE!
Results caused by ± 10% powder lot-to-lot burning rate variation using nominal charge
Data for burning rate increased by 10% relative to nominal value:
+Ba 104 49.50 2939 2685 65625 10298 99.4 1.022 !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba 104 49.50 2625 2142 45630 9720 88.7 1.199
So the data is dependent upon your measurements. Make certain of your cartridge length and your maximum case capacity, overflow and you will get reasonably precise data. Measure maximum case capacity, overflow by measuring the weight of deoxygenated water (let an open container of water set out overnight) at STP (room temperature). Fill the case until you get a convex meniscus. That is your maximum case capacity, overflow.
You gave me 52.5 grains of water, which I assumed you measured as case overfill capacity. Consequently, that is what I used as input on QL. You also gave me a cartridge length of 3.000 inches. Thus, the useable case capacity is calculated to be 44.673 grains of water. The standardized cartridge length is 3.071 inches, and the Maximum Case Capacity, overflow is 59.50 grains of water. If I use these parameters, I get the following data generated:
Cartridge : 7 x 57 mm Mauser
Bullet : .284, 140, Nosler BalTip 28140
Useable Case Capaci: 52.812 grain H2O = 3.429 cm³
Cartridge O.A.L. L6: 3.071 inch = 78.00 mm
Barrel Length : 22.0 inch = 558.8 mm
Powder : Hodgdon H4350
Predicted data by increasing and decreasing the given charge,
incremented in steps of 2.0% of nominal charge.
CAUTION: Figures exceed maximum and minimum recommended loads !
Step Fill. Charge Vel. Energy Pmax Pmuz Prop.Burnt B_Time
% % Grains fps ft.lbs psi psi % ms
-20.0 83 39.60 2240 1560 29459 7821 84.9 1.452
-18.0 85 40.59 2296 1638 31375 8091 86.2 1.416
-16.0 87 41.58 2351 1718 33416 8357 87.5 1.381
-14.0 89 42.57 2407 1801 35589 8618 88.8 1.346
-12.0 91 43.56 2463 1885 37907 8874 89.9 1.312
-10.0 94 44.55 2519 1972 40379 9122 91.1 1.272
-08.0 96 45.54 2575 2061 43015 9363 92.1 1.235
-06.0 98 46.53 2631 2153 45832 9596 93.1 1.199
-04.0 100 47.52 2688 2246 48841 9819 94.1 1.165 ! Near Maximum !
-02.0 102 48.51 2744 2341 52050 10033 95.0 1.132 ! Near Maximum !
+00.0 104 49.50 2801 2439 55456 10235 95.8 1.099 ! Near Maximum !
+02.0 106 50.49 2858 2538 59094 10426 96.5 1.068 !DANGEROUS LOAD-DO NOT USE!
+04.0 108 51.48 2914 2640 62987 10604 97.2 1.038 !DANGEROUS LOAD-DO NOT USE!
+06.0 110 52.47 2971 2744 67160 10768 97.8 1.009 !DANGEROUS LOAD-DO NOT USE!
+08.0 112 53.46 3027 2849 71636 10918 98.4 0.981 !DANGEROUS LOAD-DO NOT USE!
+10.0 114 54.45 3084 2957 76445 11053 98.8 0.954 !DANGEROUS LOAD-DO NOT USE!
Results caused by ± 10% powder lot-to-lot burning rate variation using nominal charge
Data for burning rate increased by 10% relative to nominal value:
+Ba 104 49.50 2939 2685 65625 10298 99.4 1.022 !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba 104 49.50 2625 2142 45630 9720 88.7 1.199
So the data is dependent upon your measurements. Make certain of your cartridge length and your maximum case capacity, overflow and you will get reasonably precise data. Measure maximum case capacity, overflow by measuring the weight of deoxygenated water (let an open container of water set out overnight) at STP (room temperature). Fill the case until you get a convex meniscus. That is your maximum case capacity, overflow.
- Thread starter
- #14
